CN100384721C - Barium metaphosphorate production process - Google Patents
Barium metaphosphorate production process Download PDFInfo
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- CN100384721C CN100384721C CNB200410073595XA CN200410073595A CN100384721C CN 100384721 C CN100384721 C CN 100384721C CN B200410073595X A CNB200410073595X A CN B200410073595XA CN 200410073595 A CN200410073595 A CN 200410073595A CN 100384721 C CN100384721 C CN 100384721C
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- barium
- hydrogen phosphate
- barium hydrogen
- hydrated barta
- drying tower
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Abstract
The present invention relates to a production method of barium metaphosphorate. Firstly, barium hydroxide is taken to be arranged in a container, deionized water and active carbon are added to be stirred and heated to dissolve fully until the specific gravity is from 1.05 to 1.1, iron, copper, nickel, manganese and cobalt are less than 0.0003% after standing and filtration, and the refined barium hydroxide is obtained to be arranged in another container. After stirring, good phosphoric acid is added, pH value is adjusted to 9 to 11, and the deposition of barium hydrogen phosphate is obtained. The deionized water is added again to dilute, and the mixing slurry of the barium hydrogen phosphate is obtained to be condensed into barium metaphosphate after centrifugal spray-drying. The present invention solves the technical problems of complex production process, high production cost and unstable product quality in the background art. The present invention has the advantages of easy adjustment and control of production process, low impurity content of the product and high yield.
Description
Technical field
The present invention relates to a kind of production technique of barium metaphosphate, relate in particular to the production technique of the barium metaphosphate of the low impurity content that a kind of fire retardant and phosphate optical glass additive use.
Background technology
At present, the production method of barium metaphosphate mainly is to use the mixture of barium hydrogen phosphate and barium carbonate through high-temperature calcination 15 hours, makes barium metaphosphate.Another kind method is that barium peroxide and phosphatizing generate the barium phosphate precipitation, and the heated phosphoric precipitated barium makes it change into barium metaphosphate.The common defects of these two kinds of methods is production cost height, and the productive rate instability has intermediate in the product, unstable product quality, complex manufacturing.
Summary of the invention
The object of the present invention is to provide a kind of production technique of barium metaphosphate, it has solved complex manufacturing in the background technology, production cost height, the technical problem of unstable product quality.
Technical solution of the present invention is:
A kind of production technique of barium metaphosphate, its special character is: this technology may further comprise the steps
1) getting hydrated barta places in the stainless steel reaction container, the gac that adds deionized water and 0.01%, stir, heat 100～120 ℃, it is fully dissolved, to proportion be 1.05～1.10, left standstill 16 hours or more than, filter, middle control iron, copper, nickel, manganese, cobalt are respectively less than 0.0003%, must make with extra care hydrated barta, go in another stainless steel reaction container;
2) stir on the limit, and the limit adds top grade phosphoric acid in the hydrated barta that refines, to the pH value be 4～5; Add refining hydrated barta again and adjust pH value of reactants to 9～11, get the barium hydrogen phosphate precipitation;
3) add deionized water in the barium hydrogen phosphate precipitation, the solid content that is diluted to barium hydrogen phosphate is 35～40%, gets the barium hydrogen phosphate mixed slurry;
4) with barium hydrogen phosphate mixed slurry centrifugal spray drying tower high temperature spray-drying, be condensed into barium metaphosphate.
Above-mentionedly in refining hydrated barta, add top grade phosphoric acid, be 4～5 to pH value after, add again that refining hydrated barta is adjusted pH value of reactants so that 10 be good, get barium hydrogen phosphate then and precipitate.
Above-mentionedly in barium hydrogen phosphate precipitation, add solid content to 35% that deionized water is diluted to barium hydrogen phosphate for good, then the barium hydrogen phosphate mixed slurry.
The nozzle temperature of above-mentioned centrifugal spray drying tower is advisable with 100～150 ℃, the spray-drying tower upper temp is advisable with 100～120 ℃, drying tower middle part temperature is advisable with 80～85 ℃, the drying tower temperature of lower is advisable with 70～75 ℃, the drying tower temperature out is advisable with 60～65 ℃, and the drying and dehydrating amount is good with 185 kilograms/hour.
The present invention has the following advantages:
1. the present invention is with phosphoric acid and hydrated barta effect, the generation barium phosphate, barium phosphate and water is mixed into slurry after, through centrifugal spraying drying, be transformed into barium metaphosphate again, production technique is simple, cost is low.
2. processing unit compact construction, used utility appliance is few, and floor space is little.
3. production technique is easily regulated, is controlled, and labor intensity of operating staff is low.
4. quality product quality height, steady quality, yield height.
5. the product foreign matter content is low.
Embodiment
Production technology principle of the present invention is as follows:
1. hydrated barta is utilized recrystallization method to make impurity iron in the hydrated barta, copper, nickel, manganese, cobalt all less than after 0.0003%;
2. generate barium hydrogen phosphate with GR level phosphatase reaction, chemical equation is as follows:
Ba(OH)
2+H
3PO
4→BaHPO
4+2H
2O
3. in barium hydrogen phosphate, add deionized water, be made into solid content and be 35%～40% mixing solutions,, make barium metaphosphate through centrifugal spray drying.
The concrete production technique of the present invention is as follows:
1. getting hydrated barta places in the stainless steel reaction container, the gac that adds deionized water and 0.01% stirs, heat 100～120 ℃, it is fully dissolved, to proportion be 1.05～1.10, left standstill 16 hours or more than, filter, middle control iron, copper, nickel, manganese, cobalt must be made with extra care hydrated barta respectively less than 0.0003%, go in another stainless steel reaction container.
2. stir on the limit, and the limit adds the GR level in the hydrated barta that refines be top grade phosphoric acid, to the pH value be 4～5; Add refining hydrated barta again and adjust pH value of reactants to 9～11, get the barium hydrogen phosphate precipitation.
3. add deionized water in above-mentioned barium hydrogen phosphate precipitation, the solid content that is diluted to barium hydrogen phosphate is 35～40%, gets the barium hydrogen phosphate mixed slurry.
4. with barium hydrogen phosphate mixed slurry centrifugal spray drying tower high temperature spray-drying, be condensed into barium metaphosphate.
In the production, 100～150 ℃ of spray-drying tower nozzle temperatures, 100～120 ℃ of spray-drying tower upper temps, 80～85 ℃ of middle part temperature, 70～75 ℃ of temperature of lower, temperature out are 60～65 ℃, 185 kilograms/hour of drying and dehydrating amounts.
Claims (4)
1. the production technique of a barium metaphosphate, it is characterized in that: this technology may further comprise the steps
1) getting hydrated barta places in the stainless steel reaction container, the gac that adds deionized water and 0.01%, stir, heat 100～120 ℃, it is fully dissolved, to proportion be 1.05～1.10, left standstill 16 hours or more than, filter, middle control iron, copper, nickel, manganese, cobalt are respectively less than 0.0003%, must make with extra care hydrated barta, go in another stainless steel reaction container;
2) stir on the limit, and the limit adds top grade phosphoric acid in the hydrated barta that refines, to the pH value be 4～5; Add refining hydrated barta again and adjust pH value of reactants to 9～11, get the barium hydrogen phosphate precipitation;
3) add deionized water in the barium hydrogen phosphate precipitation, the solid content that is diluted to barium hydrogen phosphate is 35～40%, gets the barium hydrogen phosphate mixed slurry;
4) with barium hydrogen phosphate mixed slurry centrifugal spray drying tower high temperature spray-drying, be condensed into barium metaphosphate.
2. the production technique of barium metaphosphate according to claim 1 is characterized in that: the described top grade phosphoric acid that in the purified hydrated barta, adds, be 4～5 to the pH value after, add refining hydrated barta again and adjust pH value of reactants to 10, the barium hydrogen phosphate precipitation.
3. the production technique of barium metaphosphate according to claim 1 and 2 is characterized in that: described to add the solid content that deionized water is diluted to barium hydrogen phosphate in the barium hydrogen phosphate precipitation be 35%, the barium hydrogen phosphate mixed slurry.
4. the production technique of barium metaphosphate according to claim 3, it is characterized in that: the nozzle temperature of described centrifugal spray drying tower is 100～150 ℃, the spray-drying tower upper temp is 100～120 ℃, drying tower middle part temperature is 80～85 ℃, the drying tower temperature of lower is 70～75 ℃, and the drying tower temperature out is 60～65 ℃; The drying and dehydrating amount is 185 kilograms/hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410073595XA CN100384721C (en) | 2004-12-31 | 2004-12-31 | Barium metaphosphorate production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410073595XA CN100384721C (en) | 2004-12-31 | 2004-12-31 | Barium metaphosphorate production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1800000A CN1800000A (en) | 2006-07-12 |
| CN100384721C true CN100384721C (en) | 2008-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410073595XA Expired - Fee Related CN100384721C (en) | 2004-12-31 | 2004-12-31 | Barium metaphosphorate production process |
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| CN (1) | CN100384721C (en) |
Families Citing this family (24)
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| CN102674289A (en) * | 2012-05-18 | 2012-09-19 | 李先兰 | Preparation method of nickel-doped barium iron phosphate |
| CN102689889A (en) * | 2012-05-18 | 2012-09-26 | 张雅静 | Method for preparing vanadium doped barium iron phosphate |
| CN102689887A (en) * | 2012-05-18 | 2012-09-26 | 李先兰 | Method for preparing zinc doped barium iron phosphate |
| CN102689885A (en) * | 2012-05-18 | 2012-09-26 | 吴润秀 | Preparation method for silver doped ferric phosphate barium |
| CN102689886A (en) * | 2012-05-18 | 2012-09-26 | 李先兰 | Method for preparing tin-doped barium iron phosphate |
| CN102689890A (en) * | 2012-05-18 | 2012-09-26 | 张雅静 | Method for preparing copper doped barium iron phosphate |
| CN102689891A (en) * | 2012-05-18 | 2012-09-26 | 吴润秀 | Method for preparing titanium doped barium iron phosphate |
| CN102689888A (en) * | 2012-05-18 | 2012-09-26 | 张健 | Method for preparing niobium-doped barium ferric phosphate |
| CN102674297A (en) * | 2012-05-28 | 2012-09-19 | 严积芳 | Preparation method of selenium-doped barium iron phosphate |
| CN102674302A (en) * | 2012-05-28 | 2012-09-19 | 严积芳 | Method for preparing zirconium doped barium iron phosphate |
| CN102674298A (en) * | 2012-05-28 | 2012-09-19 | 黄景诚 | Preparation method of cadmium doped barium ferric phosphate |
| CN102674294A (en) * | 2012-05-28 | 2012-09-19 | 黄景诚 | Method for preparing bismuth-doped ferric barium phosphate |
| CN102674299A (en) * | 2012-05-28 | 2012-09-19 | 李安平 | Preparation method of stibium doped barium ferric phosphate |
| CN102674295A (en) * | 2012-05-28 | 2012-09-19 | 何丽萍 | Preparation method of magnesium doped iron barium phosphate |
| CN102674304A (en) * | 2012-05-28 | 2012-09-19 | 李安平 | Preparation method for molybdenum-doped barium iron phosphate |
| CN102674305A (en) * | 2012-05-28 | 2012-09-19 | 韦谷林 | Preparation method of lanthanum-doped barium iron phosphate |
| CN102674301A (en) * | 2012-05-28 | 2012-09-19 | 严积芳 | Method for preparing strontium doped barium ferric phosphate |
| CN102689892A (en) * | 2012-06-06 | 2012-09-26 | 韦丽梅 | Preparation method of samarium-doped iron phosphate barium |
| CN102674311A (en) * | 2012-06-06 | 2012-09-19 | 陶荣芝 | Preparation method of gadolinium doped iron phosphate barium |
| CN102862968A (en) * | 2012-06-06 | 2013-01-09 | 陶荣燕 | Preparation method of holmium-mingled barium iron phosphate |
| CN109231180B (en) * | 2017-12-19 | 2022-04-05 | 江苏国盛新材料有限公司 | Method for preparing high-purity barium dihydrogen phosphate |
| CN110092365B (en) * | 2019-05-13 | 2020-09-25 | 承德莹科精细化工股份有限公司 | Preparation method of high-purity optical glass additive neodymium metaphosphate |
| CN113880065A (en) * | 2021-11-18 | 2022-01-04 | 贵州红星发展股份有限公司 | High-purity barium metaphosphate and preparation method thereof |
| CN114604839A (en) * | 2022-03-15 | 2022-06-10 | 贵州胜威凯洋化工有限公司 | Preparation method of barium pyrophosphate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4329327A (en) * | 1980-11-26 | 1982-05-11 | Ppg Industries, Inc. | Method for making B-form aluminum trimetaphosphate from powder reactants |
| JP2003063811A (en) * | 2001-08-28 | 2003-03-05 | Central Glass Co Ltd | Method for producing aluminum metaphosphate |
| WO2004080893A1 (en) * | 2003-03-14 | 2004-09-23 | Nippon Chemical Industrial Co., Ltd. | High purity metaphosphate and method for production thereof |
-
2004
- 2004-12-31 CN CNB200410073595XA patent/CN100384721C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4329327A (en) * | 1980-11-26 | 1982-05-11 | Ppg Industries, Inc. | Method for making B-form aluminum trimetaphosphate from powder reactants |
| JP2003063811A (en) * | 2001-08-28 | 2003-03-05 | Central Glass Co Ltd | Method for producing aluminum metaphosphate |
| WO2004080893A1 (en) * | 2003-03-14 | 2004-09-23 | Nippon Chemical Industrial Co., Ltd. | High purity metaphosphate and method for production thereof |
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| Publication number | Publication date |
|---|---|
| CN1800000A (en) | 2006-07-12 |
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